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strvec: add functions to replace and remove strings

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Add two functions that allow to replace and remove strings contained in
the strvec. This will be used by a subsequent commit that refactors
git-mv(1).

While at it, add a bunch of unit tests that cover both old and new
functionality.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2024-05-27 13:47:04 +02:00
committed by Junio C Hamano
parent 3ef52dd112
commit 11ce77b5cc
6 changed files with 329 additions and 0 deletions
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20
strvec.c
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@@ -56,6 +56,26 @@ void strvec_pushv(struct strvec *array, const char **items)
strvec_push(array, *items);
}
const char *strvec_replace(struct strvec *array, size_t idx, const char *replacement)
{
char *to_free;
if (idx >= array->nr)
BUG("index outside of array boundary");
to_free = (char *) array->v[idx];
array->v[idx] = xstrdup(replacement);
free(to_free);
return array->v[idx];
}
void strvec_remove(struct strvec *array, size_t idx)
{
if (idx >= array->nr)
BUG("index outside of array boundary");
free((char *)array->v[idx]);
memmove(array->v + idx, array->v + idx + 1, (array->nr - idx) * sizeof(char *));
array->nr--;
}
void strvec_pop(struct strvec *array)
{
if (!array->nr)